summaryrefslogtreecommitdiffstats
path: root/src/plugins/lldp/lldp_api.c
blob: bb5d1cbb5e87177342729fe07f7ea45eca48a4bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/*
 *------------------------------------------------------------------
 * lldp_api.c - lldp api
 *
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *------------------------------------------------------------------
 */

#include <vnet/vnet.h>
#include <vlibmemory/api.h>

#include <vnet/interface.h>
#include <vnet/api_errno.h>
#include <lldp/lldp.h>
#include <lldp/lldp_node.h>

#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip_types_api.h>

/* define message IDs */
#include <vnet/format_fns.h>
#include <lldp/lldp.api_enum.h>
#include <lldp/lldp.api_types.h>

/**
 * Base message ID fot the plugin
 */
static u32 lldp_base_msg_id;
#define REPLY_MSG_ID_BASE lldp_base_msg_id

#include <vlibapi/api_helper_macros.h>

static void
vl_api_lldp_config_t_handler (vl_api_lldp_config_t *mp)
{
  vl_api_lldp_config_reply_t *rmp;
  int rv = 0;
  u8 *sys_name = 0;

  sys_name = vl_api_from_api_to_new_vec (mp, &mp->system_name);

  if (lldp_cfg_set (&sys_name, ntohl (mp->tx_hold), ntohl (mp->tx_interval)) !=
      lldp_ok)
    {
      vec_free (sys_name);
      rv = VNET_API_ERROR_INVALID_VALUE;
    }

  REPLY_MACRO (VL_API_LLDP_CONFIG_REPLY);
}

static void
vl_api_sw_interface_set_lldp_t_handler (vl_api_sw_interface_set_lldp_t *mp)
{
  vl_api_sw_interface_set_lldp_reply_t *rmp;
  int rv = 0;
  u8 *mgmt_oid = 0, *mgmt_ip4 = 0, *mgmt_ip6 = 0;
  char *port_desc = 0;
  u8 no_data[128] = { 0 };
  ip4_address_t ip4;
  ip6_address_t ip6;

  if (vl_api_string_len (&mp->port_desc) > 0)
    {
      port_desc = vl_api_from_api_to_new_c_string (&mp->port_desc);
    }

  ip4_address_decode (mp->mgmt_ip4, &ip4);

  if (ip4.as_u32 != 0)
    {
      vec_validate (mgmt_ip4, sizeof (ip4_address_t) - 1);
      clib_memcpy (mgmt_ip4, &ip4, sizeof (ip4));
    }

  ip6_address_decode (mp->mgmt_ip6, &ip6);

  if (!ip6_address_is_zero (&ip6))
    {
      vec_validate (mgmt_ip6, sizeof (ip6_address_t) - 1);
      clib_memcpy (mgmt_ip6, &ip6, sizeof (ip6));
    }

  if (memcmp (mp->mgmt_oid, no_data, strlen ((char *) mp->mgmt_oid)) != 0)
    {
      vec_validate (mgmt_oid, strlen ((char *) mp->mgmt_oid) - 1);
      strncpy ((char *) mgmt_oid, (char *) mp->mgmt_oid, vec_len (mgmt_oid));
    }

  VALIDATE_SW_IF_INDEX (mp);

  if (lldp_cfg_intf_set (ntohl (mp->sw_if_index), (u8 **) &port_desc,
			 &mgmt_ip4, &mgmt_ip6, &mgmt_oid,
			 mp->enable) != lldp_ok)
    {
      vec_free (port_desc);
      vec_free (mgmt_ip4);
      vec_free (mgmt_ip6);
      vec_free (mgmt_oid);
      rv = VNET_API_ERROR_INVALID_VALUE;
    }

  BAD_SW_IF_INDEX_LABEL;

  REPLY_MACRO (VL_API_SW_INTERFACE_SET_LLDP_REPLY);
}

static void
send_lldp (u32 index, vl_api_registration_t *rp, u32 context)
{
  vl_api_lldp_details_t *rmp = 0;
  vnet_main_t *vnm = &vnet_main;
  lldp_main_t *lm = &lldp_main;
  const lldp_intf_t *n = vec_elt_at_index (lm->intfs, index);
  const vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, n->hw_if_index);

  REPLY_MACRO_DETAILS4_END (
    VL_API_LLDP_DETAILS, rp, context, ({
      rmp->sw_if_index = hw->sw_if_index;
      rmp->last_heard = n->last_heard;
      rmp->last_sent = n->last_sent;
      rmp->ttl = n->ttl;
      rmp->port_id_subtype = (vl_api_port_id_subtype_t) n->port_id_subtype;
      rmp->chassis_id_subtype =
	(vl_api_chassis_id_subtype_t) n->chassis_id_subtype;
      rmp->chassis_id_len = vec_len (n->chassis_id);
      clib_memcpy (&rmp->chassis_id, n->chassis_id, rmp->chassis_id_len);
      rmp->port_id_len = vec_len (n->port_id);
      clib_memcpy (&rmp->port_id, n->port_id, rmp->port_id_len);
    }));
}

static void
vl_api_lldp_dump_t_handler (vl_api_lldp_dump_t *mp)
{
  int rv = 0;
  lldp_main_t *lm = &lldp_main;
  vl_api_lldp_dump_reply_t *rmp;

  REPLY_AND_DETAILS_MACRO_END (VL_API_LLDP_DUMP_REPLY, lm->intfs,
			       ({ send_lldp (cursor, rp, mp->context); }));
}

/*
 *  * lldp_api_hookup
 *   * Add vpe's API message handlers to the table.
 *    * vlib has already mapped shared memory and
 *     * added the client registration handlers.
 *      * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
 *       */
#include <lldp/lldp.api.c>

static clib_error_t *
lldp_api_hookup (vlib_main_t *vm)
{
  /*
   * Set up the (msg_name, crc, message-id) table
   */
  lldp_base_msg_id = setup_message_id_table ();

  return 0;
}

VLIB_API_INIT_FUNCTION (lldp_api_hookup);

#include <vlib/unix/plugin.h>
#include <vpp/app/version.h>

VLIB_PLUGIN_REGISTER () = {
  .version = VPP_BUILD_VER,
  .description = "Link Layer Discovery Protocol (LLDP)",
};

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */